Dickey
Bronze Member
- Joined
- Mar 28, 2005
- Messages
- 73
- Location
- Tyro, Arkansas
- Tractor
- M5700, L245DT and Mahindra mpower 85
I had the same problem and just sprayed the fuel stop solenoid with a little WD40 and haven't had any problem since.
Kubota M9540 engine won't shut off
- Thread starter JoWalker
- Start date
- Views: 15213
-
- Tags
- kubota m9540
Notforhire
Veteran Member
The fact that the AC blower also stopped would make me think that they are on a common fuse.
If it was the fuel stop solenoid wouldn't the engine have stayed running when I disconnected it because it would have been stuck open? The AC quit working at the same time?
That was what I assumed when it first happened, but they don't have a common fuse that I can find. I've pulled every fuse I can locate on the tractor and checked it. I switched them around even and still no difference. There is a fuse for the fuel stop solenoid and one for the AC right next to it in the fuse box under the hood but no shared fuse anywhere.
tungularafishcamp
Veteran Member
- Joined
- Sep 30, 2010
- Messages
- 1,210
- Location
- kodiak island, Alaska
- Tractor
- kubota L2800, 1/2 of a L48
Any way something could have gotten into the fuse box and is shorting the 2 of them out as they are right next to each other? Can you get the back off of the fuse box and see if things are clear?
Notforhire
Veteran Member
If you found fuses marked for the AC and Fuel stop, thats good. There should not be any additional fuses. Is there power on the line side of the two fuses?
Do I understand you correctly, that when you unplug the electrical connection for the fuel stop solenoid, the engine stops running?
Yes, there's power on the line side. I also checked the relays for both things and they are good.
Yes, when I unplug the electrical connection to the fuel stop, the engine stops running which is what made think that part was good.
Notforhire
Veteran Member
I would agree that it's good. Not having a wiring dia. I am guessing. I would think that if you pulled the fuel stop relay the engine would not run. If that is the case either the fuel stop relay is stuck in it's energized position, or there is power to the coil telling it to close, which there shouldn't be with the key off.
From what you are telling me, the fuel stop needs to be energized while the engine is running. This is contrary to what I have read about Kubota engines. Yours must differ from the smaller units.
I talked to a guy in service at the dealership and he told me if I disconnected the fuel stop solenoid and the engine kept running then the solenoid was bad because it was staying stuck open. If the engine shut off then it was somewhere in the wiring. I started the tractor just now and pulled the relay for that solenoid and the tractor kept running. I'm not sure if that's a good thing, bad thing, or meaningless...
Notforhire
Veteran Member
The way I would think it would work(and I could be wrong) is the fuel stop gets its power through the fuel stop relay. Because the engine continues to run, the fuel stop must be getting power from another circuit. (maybe a short from the AC blower) You could start pulling fuses with the engine running. If it stops that is the circuit that is feeding the fuel stop.
"he told me if I disconnected the fuel stop solenoid and the engine kept running then the solenoid was bad because it was staying stuck open."
This isn't the case. Correct? When you unplug the sol. the engine stops, yes?
With the ign off, there should be no voltage at the solenoid. I would guess is that you find the opposite.